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Photovoltaic roof shingles

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translucent and allows in daylight sufficient to light an arena even on a cloudy day. Unlike artificial light sources, natural lighting does not made shadows on the arena surface. The company boasts that it’s resistant to strong winds and is strong and durable enough to stand up to snow loads. The covering dulls noise, stays rigid as a drum, and doesn’t heat up the interior or cause condensation. In hot weather the temperature inside can be 10 to 15 degrees cooler. If it’s zero degrees outside, it’s zero degrees inside, unless the sun is out which will allow light in to bring the temperature up. Owners have added lights, a

variety of doors and windows, and heating systems to use the structures as barns, hay storage, riding arenas, and show or symposium venues. Other companies such as

the roofing pattern of traditional asphalt shingles. PV roofing can produce electricity from sunlight to

“You may find yourself tossing some

traditional methods and products aside in favor of the latest choices.”

Sprung Instant Structures in Salt Lake City, UT, offer similar designs.

n ENERGY: Horse facilities are attracted to energy independence through solar technology. A decade ago the only source was the huge, obvious panels. Today photovoltaic cells built into roof shingles are an attractive, space saving source to supply energy to barns in sunny climates. Designer and architect John Blackburn is constructing a barn in Rancho Santa Fe, California, which will create its own electricity by the use of photovoltaic (PV) modules which convert sunlight into electricity and are integrated into standard roofing materials such as asphalt shingles, standing seam metal roofing, and slate or concrete tiles. The solar system blends so well that is difficult to notice it on the roof. Most common are photovoltaic roof tiles with mono-

or polycrystalline solar cells used together with the classic roof tiles. Photovoltaic roof shingles are produced with crystalline with metal background or with thin-film solar cells on glass or metal substrate . They are configured in series or parallel on the roof deck to form an array. The array is then used in combination with conventional roofing products. The flexible thin-film shingle blends into

power certain barn functions or the entire electrical needs of a horse facility. Most residential PV systems consist of photovoltaic shingles or building material that produces electrical current, battery storage, and an inverter and wiring to convert PV current (DC) from sunlight to standard household current (AC) and distribute it directly to the building. Small PV systems are commonly attached directly to appliances or lighting systems, while larger systems can be

stand-alone and supply all power. PV systems can also be used in conjunction with utility-supplied power. Excess power produced during daylight hours can be fed back into the utility’s lines, while electricity can be drawn into the barn when demand is greater than can be supplied by the PV roofing.

n HEAT: At the other side of the climate spectrum, Mead Brook Farm will be fighting off the evils of Jaffrey, New Hampshire winters by heating the 80 x 200 arena and 24-stall barn with the natural resources of the property— the 130 acres of woods. In the heart of winter, manager Cathy Lambert projects she may burn a cord of wood a day in the exterior wood furnace which will heat water and antifreeze mix which in turn will heat air blown into the buildings. “Our goal is to keep the arena at a median temperature

of 40°F, warm enough for horses to work in, but not too warm for horses with winter coats,” Cathy explains. “The central core of the barn which includes stalls, wash rack, grooming racks, farrier stall (which had radiant heated floors) is very well insulated, but we will keep it near 40°F on days that the outside temp is minus 10°F or more—a luxury for wintering in the North. With a barn full of

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